What nucleotide base in dna is replaced by uracil in rna? cytosine adenine thymine guanine

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Read the sentence. “yesterday we arrived late for the outdoor concert in the city gardens.” which words in the sentence are adverbs? a. late; city b. yesterday; outdoor c. yesterday; late d. outdoor; city

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior